Find the angle sum of all interior angles of a regular polygon which has 7 sides.
180 o
540 o
900 o
960 o
Sum of interior angle of polygon = (n - 2) × 180∘
= (7 - 2) × 180∘
= 900∘
Each interior angle of a regular polygon is 144°. The measure of each interior angle of a regular polygon which has double the number of sides as the first polygon is